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3 years ago

Really would appreciate some help thank u x

Mathematics

1 answer:

vivado [14]3 years ago

7 0

Answer:

$\sqrt[12]{48}$

es igual a 1,380 (decimal)

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A forest ranger can see a distance of 12 miles from a fire tower how many square miles can he see

ioda

He see a circle, so you need to find the area.
A = π * r²
A = π * 12²
A = 3.14 * 144 =

A = 452.16 miles²

6 0

3 years ago

Two numbers have the ratio of 4:7 if their sum is 143 what are the numbers?

garri49 [273]

Answer:

52:91

Step-by-step explanation:

To find a ratio value you need to think of it more as two numerators that together equal one whole. 4+7 is 11 so that would be the denominator. If the sum is 143, then we divide by 11 since one number is 4/11s of 143, and the other is 7/11s of 143. 143/11=13

now we multiply both:

4(13)=52

7(13)=91

Check:

91+52=143

52/91 simplifies to 4/7 or 4:7

i hope this helps!

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3 years ago

Y = 3x – 21 is it proportional

pochemuha

Answer:

yes

Step-by-step explanation:

4 0

3 years ago

What is 4/10 plus 5/100?

storchak [24]

Answer:

0.45

Step-by-step explanation:

4/10 is 0.4

and

5/100 is 0.05

5 0

3 years ago

Derivatives concept: Exercises using the definition of derivatives: (Full development)

krok68 [10]

(A) f(x) = 7 is constant, so f(x + h) = 7, too, which makes f(x + h) - f(x) = 0. So f'(x) = 0.

(B) f(x) = 5x + 1 ==> f(x + h) = 5 (x + h) + 1 = 5x + 5h + 1

==> f(x + h) - f(x) = 5h

Then

$\displaystyle f'(x) = \lim_{h\to0}\frac{5h}h = \lim_{h\to0}5 = 5$

(C) f(x) = x ² + 3 ==> f(x + h) = (x + h)² + 3 = x ² + 2xh + h ² + 3

==> f(x + h) - f(x) = 2xh + h ²

$\implies\displaystyle f'(x) = \lim_{h\to0}\frac{2xh+h^2}h = \lim_{h\to0}(2x+h) = 2x$

(D) f(x) = x ² + 4x - 1 ==> f(x + h) = (x + h)² + 4 (x + h) - 1 = x ² + 2xh + h ² + 4x + 4h - 1

==> f(x + h) - f(x) = 2xh + h ² + 4h

$\implies \displaystyle f'(x) = \lim_{h\to0}\frac{2xh+h^2+4h}h = \lim_{h\to0}(2x+h+4) = 2x+4$

5 0

3 years ago